<template>
  <div>
    <div class="w100 haed bbg pr">
      <img class="fl hpd pa" @click="onClickLeft" style="height: 40rem;left: 20rem;top: 7rem;"
        src="../../assets/img/back.png">
      <p class="fz37 cfff hpd tc">扫码核销</p>
    </div>
    <div class="code">
      <div class="qr-scanner">
        <div class="box" @click="go">
          <qrcode-stream @decode="onDecode" @init="onInit" style="height:500rem;">
            <div class="line"></div>
            <div class="angle"></div>
          </qrcode-stream>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
// 引入
import { Notify } from 'vant';
import 'vant/lib/notify/style';
import { QrcodeStream } from 'vue-qrcode-reader'
import { scanVerification } from '../../api/index'
export default {
  // 注册
  components: { QrcodeStream },

  data() {
    return {
      result: '', // 扫码结果信息
      error: '' // 错误信息
    }
  },
  mounted() {


  },
  methods: {
    go() {
      this.$router.push({ name: 'cancel',query: { result: 8768 } })
    },
    onClickLeft() {
      this.$router.go(-1)
    },
    onDecode(result) {
      this.result = result
      console.log(this.result);
      scanVerification({ verification: this.result })
        .then(r => {
          console.log(r);
          if (r.data == "已完成") {
            this.$router.push({ name: 'cancel', query: { result: this.result } })
          } else {
            Notify('无此核销码')
          }
        })
    },

    async onInit(promise) {
      try {
        await promise
      } catch (error) {
        if (error.name === 'NotAllowedError') {
          this.error = 'ERROR: 您需要授予相机访问权限'
        } else if (error.name === 'NotFoundError') {
          this.error = 'ERROR: 这个设备上没有摄像头'
        } else if (error.name === 'NotSupportedError') {
          this.error = 'ERROR: 所需的安全上下文(HTTPS、本地主机)'
        } else if (error.name === 'NotReadableError') {
          this.error = 'ERROR: 相机被占用'
        } else if (error.name === 'OverconstrainedError') {
          this.error = 'ERROR: 安装摄像头不合适'
        } else if (error.name === 'StreamApiNotSupportedError') {
          this.error = 'ERROR: 此浏览器不支持流API'
        }
      }
    }
  }
}
</script>

<style scoped>
.code {
  height: 1195rem;
  /* margin-top: -275rem; */
  background-color: #fff;
  position: relative;
  top: -275rem;
  margin: 0 20rem;
  border-top-left-radius: 2%;
  border-top-right-radius: 2%;
}

.code /deep/ .qrcode-stream-wrapper {
  z-index: -1;
}

.qr-scanner .box {
  width: 500rem;
  height: 500rem;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  overflow: hidden;
}

.qr-scanner .line {
  height: calc(100% - 2px);
  width: 100%;
  background: linear-gradient(180deg, rgba(0, 255, 51, 0) 43%, #2e81fa 211%);
  border-bottom: 3px solid #2e81fa;
  transform: translateY(-100%);
  animation: radar-beam 2s infinite alternate;
  animation-timing-function: cubic-bezier(0.53, 0, 0.43, 0.99);
  animation-delay: 1.4s;
}

.qr-scanner .box:after,
.qr-scanner .box:before,
.qr-scanner .angle:after,
.qr-scanner .angle:before {
  content: '';
  display: block;
  position: absolute;
  width: 5vw;
  height: 5vw;
  border: 10rem solid transparent;
  border-radius: 20%;

}

.qr-scanner .box:after,
.qr-scanner .box:before {
  top: 0;
  border-top-color: #2e81fa;

}

.qr-scanner .angle:after,
.qr-scanner .angle:before {
  bottom: 0;
  border-bottom-color: #2e81fa;
  position: absolute;

}

.qr-scanner .box:before,
.qr-scanner .angle:before {
  left: 0;
  border-left-color: #2e81fa;
  position: absolute;

}

.qr-scanner .box:after,
.qr-scanner .angle:after {
  right: 0;
  border-right-color: #2e81fa;
  position: absolute;

}

@keyframes radar-beam {
  0% {
    transform: translateY(-100%);
  }

  100% {
    transform: translateY(0);
  }
}
</style>

